Large-scale circulating fluidized bed boilers, gas boilers, biomass boilers, waste heat boilers for waste, hazardous waste, non-ferrous metals, CDQ and other waste heat boilers, R&D and manufacturer of new intelligent control autoclaves
What is once-through boiler?
Home » service support » Boiler knowledge » Boiler knowledge » What is once-through boiler?

What is once-through boiler?

Views: 2567     Author: Site Editor     Publish Time: 2023-03-16      Origin: Site

The waste heat boiler uses the sensible heat in the waste gas, waste or waste liquid in the industrial process or (and) the heat generated after the combustion of its combustible substances to heat the water to a certain temperature and provide hot water or steam for other sections, which greatly improves the utilization rate of fuel combustion and reduces costs and increases benefits for enterprises. Waste heat boiler has the advantages of high thermal efficiency, long service life, safety and reliability, convenient maintenance and so on. After flue gas treatment, it can meet the environmental protection standards, reduce the pressure of environmental protection and help the green development of enterprises.

Once-through boiler is a boiler that turns feedwater into steam through each heating surface at one time. Its circulation ratio is equal to 1.0. The feedwater passes through the economizer, the evaporative heating surface and the superheater in the sequence of action of the water pump head and all of them become superheated steam. In the medium-capacity once-through boiler, there are three basic types according to the layout of the furnace evaporation heating surface: the horizontal surrounding tube type, the vertical rising tube plate type and the return tube plate type.

Compared with natural circulation boiler, once-through boiler has the advantages of relatively free arrangement of evaporation heating surface, which can be applied under supercritical pressure and critical pressure, convenient manufacturing and metal saving due to no drum, in addition, rapid start and stop and flexible adjustment. Its disadvantages are high requirements for water supply quality and automatic regulation, large resistance of evaporation heating surface and large power consumption of water supply pump.

The introduction and structural layout of once-through boiler are available in the "Boiler Manual" and other relevant learning materials. You can find a related book to have a look.


The above is Jiangsu Sifang Clean Energy Equipment Manufacturing's answer to this question. If you have any questions about other boiler related issues, please consult Jiangsu Sifang Clean Energy Equipment Manufacturing's online customer service or call 0516-85871846 or 0516-85532705. Jiangsu Sifang Clean Energy Equipment Manufacturing's professional technicians will answer your questions in time.

Integrate high-end technology to create high-quality boilers

Product Center

Quick Links


Contact us
+86 516 85532690
Huarun Industrial Park, Xuzhou Huaihai International Port District, Xuzhou City, Jiangsu Province, China
Whatsapp: +86 19805005735
Copyright 2023 Jiangsu Sifang Clean Energy Equipment Manufacturing Co.,Ltd | Sitemap    苏ICP备14011720号-1
Technical Support: Leadong